Can you point to any examples of big food companies actually making changes for Michelle Obama's campaign?

First two results from this new-fangled thing they call a "search engine:"

https://jamanetwork.com/journals/jama/fullarticle/2768807?re...

https://www.vox.com/2016/10/3/12866484/michelle-obama-childh...

I appreciate you sharing those links, even if you had to get a jab in doing it :-)

Sisco, e.g. public school cafeterias. That's probably about it. The way in which school menus were actually changed was very misguided however.